[FIX] website_sale: avoid to set no shipping address
[FIX] website_sale: avoid to set no shipping address

This is related to the revision e673ee6c627625e76205570a16e1391083b87849.

The checkout shipping address must be written on the
sale order only if there is one.

Elico-Corp/odoo_OCB,Elico-Corp/odoo_OCB,ygol/odoo,ygol/odoo,stephen144/odoo,sysadminmatmoz/OCB,stephen144/odoo,hip-odoo/odoo,bplancher/odoo,Elico-Corp/odoo_OCB,hip-odoo/odoo,bplancher/odoo,laslabs/odoo,dfang/odoo,storm-computers/odoo,microcom/odoo,ygol/odoo,sysadminmatmoz/OCB,stephen144/odoo,storm-computers/odoo,storm-computers/odoo,stephen144/odoo,laslabs/odoo,hip-odoo/odoo,laslabs/odoo,laslabs/odoo,sysadminmatmoz/OCB,storm-computers/odoo,sysadminmatmoz/OCB,microcom/odoo,dfang/odoo,Elico-Corp/odoo_OCB,dfang/odoo,microcom/odoo,laslabs/odoo,microcom/odoo,microcom/odoo,storm-computers/odoo,sysadminmatmoz/OCB,stephen144/odoo,Elico-Corp/odoo_OCB,Elico-Corp/odoo_OCB,laslabs/odoo,hip-odoo/odoo,dfang/odoo,dfang/odoo,storm-computers/odoo,ygol/odoo,dfang/odoo,ygol/odoo,bplancher/odoo,ygol/odoo,hip-odoo/odoo,sysadminmatmoz/OCB,sysadminmatmoz/OCB,microcom/odoo,bplancher/odoo,stephen144/odoo,hip-odoo/odoo,bplancher/odoo,bplancher/odoo,ygol/odoo